Always plot your data! Table 5.1 presents four sets of data prepared by thestatistician
Chapter 0, Problem 5.34(choose chapter or problem)
Always plot your data! Table 5.1 presents four sets of data prepared by thestatistician Frank Anscombe to illustrate the dangers of calculating without firstplotting the data.13(a) Without making scatterplots, find the correlation and the least-squaresregression line for all four data sets. What do you notice? Use the regression lineto predict y for x = 10.(b) Make a scatterplot for each of the data sets and add the regression line toeach plot.(c) In which of the four cases would you be willing to use the regression line todescribe the dependence of y on x? Explain your answer in each case.
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